Adds an error message, in the form of an HTML::Lint::Error object, to the list of error messages for the current object. The file, line and column are automatically passed to the HTML::Lint::Error constructor, as well as whatever other key value pairs are passed.

For example:

$lint->gripe( 'attr-repeated', tag => $tag, attr => $attr );

Usually, the user of the object won't call this directly, but just in case, here you go.